Congrats for the great result!
The carpet is an old one from the LRP Touring Car Masters some years ago I think.
It's a standard carpet which the most tracks here in germany use. I don't know any specific details, sorry.
I just played a little bit with the shocks setting and ended up with this soft setting which felt best and increased laptimes.
I also compared the setting with a standard shock and that felt nearly the same.
Freddy